Let's calculate 1780 x 8559
1780 × 8559 = 8559 × (1780)
+ 8559 × 0 that is equal 0
+ 8559 × 80 that results in 684720
+ 8559 × 700 that is equal 5991300
+ 8559 × 1000 which equals 8559000

= 15235020
